Product details

Product type Power Management Die or wafer type Tested Die Rating Military Operating temperature range (°C) -40 to 85
Product type Power Management Die or wafer type Tested Die Rating Military Operating temperature range (°C) -40 to 85
DIESALE (Y) See data sheet
  • Available in Fixed 1.8-V, 2.5-V, 3.3-V, 5-V Versions
  • Available in Adjustable Version
  • Current Limiting and Thermal Protection
  • 2% Output Accuracy
  • Output Current 1.5 A
  • Line Regulation 0.015% (Typical)
  • Load Regulation 0.1% (Typical)
  • Maximum Input Voltage up to 29 V
  • Minimum Adjustable Output Voltage
    Down to 1.25 V
  • Stable with Ceramic Output Capacitor with ESR
  • Temperature Range : –40°C to +125°C
  • Available in Fixed 1.8-V, 2.5-V, 3.3-V, 5-V Versions
  • Available in Adjustable Version
  • Current Limiting and Thermal Protection
  • 2% Output Accuracy
  • Output Current 1.5 A
  • Line Regulation 0.015% (Typical)
  • Load Regulation 0.1% (Typical)
  • Maximum Input Voltage up to 29 V
  • Minimum Adjustable Output Voltage
    Down to 1.25 V
  • Stable with Ceramic Output Capacitor with ESR
  • Temperature Range : –40°C to +125°C

The LM1086-MIL is a regulator with a maximum dropout of 1.5 V at 1.5 A of load current. The device has the same pin-out as TI’s industry standard LM317.

Two resistors are required to set the output voltage of the adjustable output voltage version of the LM1086-MIL. Fixed output voltage versions integrate the adjust resistors. Typically, no input capacitor is needed unless the device is situated more than 6 inches from the input filter capacitors. Output capacitor can be replaced with ceramic and appropriate ESR.

The LM1086-MIL circuit includes a zener trimmed bandgap reference, current limiting, and thermal shutdown. Because the LM1086-MIL regulator is floating and detects only the input-to-output differential voltage, supplies of several hundred volts can be regulated as long as the maximum input-to-output differential is not exceeded. Exceeding the maximum input-to-output deferential will result in short-circuiting the output. By connecting a fixed resistor between the adjustment pin and output, the LM1086-MIL can be also used as a precision current regulator.

For applications requiring greater output current, refer to LM1084 for the 5-A version, and the LM1085 for the 3-A version.

The LM1086-MIL is a regulator with a maximum dropout of 1.5 V at 1.5 A of load current. The device has the same pin-out as TI’s industry standard LM317.

Two resistors are required to set the output voltage of the adjustable output voltage version of the LM1086-MIL. Fixed output voltage versions integrate the adjust resistors. Typically, no input capacitor is needed unless the device is situated more than 6 inches from the input filter capacitors. Output capacitor can be replaced with ceramic and appropriate ESR.

The LM1086-MIL circuit includes a zener trimmed bandgap reference, current limiting, and thermal shutdown. Because the LM1086-MIL regulator is floating and detects only the input-to-output differential voltage, supplies of several hundred volts can be regulated as long as the maximum input-to-output differential is not exceeded. Exceeding the maximum input-to-output deferential will result in short-circuiting the output. By connecting a fixed resistor between the adjustment pin and output, the LM1086-MIL can be also used as a precision current regulator.

For applications requiring greater output current, refer to LM1084 for the 5-A version, and the LM1085 for the 3-A version.

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Technical documentation

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Type Title Date
* Data sheet LM1086-MIL 1.5-A Low Dropout Positive Voltage Regulator datasheet PDF | HTML 24 Jun 2017
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 09 Aug 2017
Application note Linear power for automated industrial systems 09 Jan 2015
Application note AN-103 LM340 Series Three Terminal Positive Regulators (Rev. A) 06 May 2013
Application note AN-1148 Linear Regulators: Theory of Operation and Compensation (Rev. B) 06 May 2013
Application note Method For Cal Output Voltage Tolerances in Adj Regs (Rev. A) 05 May 2013
More literature Die D/S LM1086-ADJ MDC 1.5A Low Dropout Positive Regulators 12 Sep 2012
Application note Packaging Limits Range of Linear Regulators 08 May 2010
Application note Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A) 04 Jun 2008
Application note Understanding the Terms and Definitions of LDO Voltage Regulators 21 Oct 1999

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation model

LM1086-1.8V PSpice Transient Model

SNVMB41.ZIP (72 KB) - PSpice Model
Simulation model

LM1086-1.8V Unencrypted PSpice Transient Model

SNVMB40.ZIP (2 KB) - PSpice Model
Simulation model

LM1086-2.5V PSpice Transient Model

SNVMB39.ZIP (72 KB) - PSpice Model
Simulation model

LM1086-2.5V Unencrypted PSpice Transient Model

SNVMB38.ZIP (2 KB) - PSpice Model
Simulation model

LM1086-3.3V PSpice Transient Model

SNVMB37.ZIP (72 KB) - PSpice Model
Simulation model

LM1086-3.3V Unencrypted PSpice Transient Model

SNVMB36.ZIP (2 KB) - PSpice Model
Simulation model

LM1086-5.0V PSpice Transient Model

SNVMB34.ZIP (72 KB) - PSpice Model
Simulation model

LM1086-5.0V Unencrypted PSpice Transient Model

SNVMB35.ZIP (2 KB) - PSpice Model
Simulation model

LM1086-ADJ PSpice Transient Model

SNVMB33.ZIP (72 KB) - PSpice Model
Simulation model

LM1086-ADJ Unencrypted PSpice Transient Model

SNVMB32.ZIP (2 KB) - PSpice Model
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